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1: <h1>Installing LON-CAPA on a minimal Fedora Core 4 Linux System</h1>
2: <p>
3: This document guides you through the process of setting up a new LON-CAPA
4: server running Fedora Core 4 (FC4) with a minimum of packages installed.
5: The computer will be configured solely as a LON-CAPA server and will be
6: expected to have no other services running. Your server is expected to have
7: a reasonably fast connection to the internet.
8: </p><p>
9: More information is available at
10: <a href="http://install.lon-capa.org/">http://install.lon-capa.org/</a>.
11: </p>
12:
13: <h2>Before you begin</h2>
14: <p>
15: Installing Linux is getting easier and easier. However, it is still a
16: non-trivial undertaking and experience with Red Hat Linux will make this
17: process easier. You will be required to log in to the machine and execute
18: some routine Unix commands.Familiarity with the Apache web server, mod_perl,
19: perl, and MySQL are not required to install and run LON-CAPA.
20: </p>
21:
22: <h2>Installation Overview</h2>
23: <p>
24: The installation process takes the following steps:
25: </p>
26: <ol>
27: <li> Obtain Fedora Core 4 installation CDs</li>
28: <li> Determine Network Settings</li>
29: <li> Install Fedora Core 4 </li>
30: <li> Update your system </li>
31: <li> Install LON-CAPA </li>
32: <li> Create a Domain Coordinator </li>
33: <li> Start/Restart services </li>
34: <li> Log in to LON-CAPA </li>
35: </ol>
36:
37: <h2>Obtain Fedora Core 4</h2>
38: <p>
39: FC4 ISO files can be obtained from the projects main site,
40: <a href="http://fedora.redhat.com/">http://fedora.redhat.com/</a>.
41: For the minimal install you will need only the first ISO image (e.g., FC4-i386-disc1.iso CD for x86-compatible 32-bit).
42: </p>
43:
44: <h2>Determine Network Settings</h2>
45: <p>
46: You will need to know the following network settings for your installation.
47: <b>Note:</b>You must have a static IP address to use LON-CAPA.
48: DHCP is <em>not</em> supported.
49: </p>
50: <ul>
51: <li>ip address </li>
52: <li>netmask </li>
53: <li>hostname </li>
54: <li>gateway </li>
55: <li>domain name server(s) </li>
56: </ul>
57:
58: <h2>Minimal FC4 Install</h2>
59: <p>
60: Installing Fedora is quite easy if you've installed any of the Red Hat products
61: before. Some documentation is available from
62: <a href="http://fedora.redhat.com/projects/anaconda-installer/">
63: http://fedora.redhat.com/projects/anaconda-installer/</a>.
64: Most of the installation screens are self explanatory.
65: There are a few steps that require comment and are dealt with below.
66: </p>
67: <dl style="list-style:square outside none">
68: <dt>Installation Type</dt>
69: <dd>Choose "Server" installation
70: <dt>Partitioning your Drive</dt>
71: <dd>You may want to use the automatic partitioning feature of the installer,
72: however you should review the results and be prepared to modify them.
73: LON-CAPA resource files are stored in the /home directory, so the
74: majority of the disk space should be allocated here. If you have 20 GB
75: of space for FC4, /home should receive at least 10 to 12 gigs.
76: Since MySQL uses the /var filesystem to store its databases you should
77: have at least 4 gigs of space available on /var. Be sure to
78: include adequate swap space. A minimum is 512 Megs, but you should
79: typically have 1 or 2x as much swap space as you do physical RAM.</dd>
80: <dt>Network Configuration</dt>
81: <dd>LON-CAPA will <b>not</b> work with a machine set up to use a dynamic
82: IP address. When configuring your network card, be sure to unselect
83: the DHCP option and enter in your network information.</dd>
84: <dt>Firewall Configuration</dt>
85: <dd>Select SSH (remote login), HTTP/HTTPS (web server).</dd>
86: <dt>SELinux Configuration</dt>
87: <dd>Choose an SElinux setting of 'disabled' or 'warn', unless you are
88: familiar with SElinux and writing security policies
89: <b>and want to help us write a security policy for LON-CAPA</b>.
90: <dt>Package Group Selection</dt>
91: <dd>Choose 'Minimal' which is the last item on the list.</dd>
92: </dl>
93: <p>
94: Finish installing your server, reboot it, and log in as root.
95: </p>
96:
97: <!---
98:
99: The firewall should be customized to allow incoming ssh and www.
100: Additional ports used by LON-CAPA are 5663 and 8080.
101: Enter these in the entry box as <nobr>"5663:tcp, 8080:tcp"</nobr>.</dd>
102:
103: -->
104:
105: <h2>Update your system</h2>
106: <p>
107: Update your system to the latest versions of the system software using yum.
108: Yum is configured to check encyption keys for the packages it installs, so
109: you need to import the keys before invoking yum.
110: </p>
111: <pre>
112: rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY
113: rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora
114: rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-extras
115: yum update
116: </pre>
117: <p>
118: Reboot your system before continuing with the installation.
119: </p>
120: <p>
121: Retrieve the FC4_loncapa_yum file from the LON-CAPA install site:
122: </p>
123: <pre>
124: wget http://install.loncapa.org/versions/fedora/4/FC4_loncapa_yum.conf
125: </pre>
126: <p>
127: Install the FC4_loncapa_yum.conf
128: </p>
129: <p>
130: <pre>
131: mv /etc/yum.conf /etc/yum.conf.backup
132: cp FC4_loncapa_yum.conf /etc/yum.conf
133: yum update
134: </pre>
135: </p>
136:
137:
138: <h2>Installing LON-CAPA</h2>
139: <h3>Install prerequisites</h3>
140: <p> Execute: </p>
141: <pre>
142: yum install LONCAPA-prerequisites
143: </pre><p>
144: This may take a moment due to LON-CAPA's large number of dependencies.
145: </p>
146: <h3>Retrieve and execute LON-CAPA setup program</h3>
147: <p>
148: Retrieve the LON-CAPA setup with the following command:
149: </p>
150: <pre>
151: wget http://install.loncapa.org/versions/fedora/4/fedora_install.tar
152: </pre>
153: <p>
154: Extract the archive with the following command:
155: </p>
156: <pre>
157: tar xf fedora_install.tar
158: </pre>
159: <p>
160: This creates a directory named <tt>installation</tt>. Change to it and
161: execute the setup script with the following commands:
162: </p>
163: <pre>
164: cd installation
165: ./install.pl
166: </pre>
167: <p>
168: This script will prompt you for the MySQL root password and will download the latest LON-CAPA release.<br />
169: You can safely ignore the following warnings from gcc 4 when compiling pwauth:<br />
170: <tt>
171: pwauth.c: In function ‘lastlog’:
172: <ul>
173: <li>pwauth.c:541: warning: incompatible implicit declaration of built-in function ‘strncpy’</li>
174: <li>pwauth.c:543: warning: incompatible implicit declaration of built-in function ‘strlen’</li>
175: </ul>
176: pwauth.c: In function ‘main’:
177: <ul>
178: <li>pwauth.c:692: warning: incompatible implicit declaration of built-in function ‘strlen’</li>
179: </ul>
180: </tt>
181:
182: </p>
183:
184: <h3>Determine LON-CAPA Settings</h3>
185: <p>
186: LON-CAPA requires a number of identifying parameters to be set in order
187: for it to function at all. Below is a list with descriptions.
188: </p>
189: <dl>
190: <dt>Host Type (library or access)</dt>
191: <dd>The server must be designated a 'library' or an 'access' server. In
192: general you should have a library server for your instructors to create
193: their course content on and run their courses. Students should connect
194: to access servers. If you are doing the first install of LON-CAPA at
195: your site, or if you are playing with it for your own edification you
196: should make your machine a 'library' server.</dd>
197: <dt>LON-CAPA domain</dt>
198: <dd>Each site or school which installs LON-CAPA needs its own domain.
199: Here at MSU we use 'msu'. You should choose something short but
200: meaningful. <i>Restriction: One word, no hyphens, underscores, or
201: special characters.</i>
202: </dd>
203: <dt>LON-CAPA host id</dt>
204: <dd>Each LON-CAPA server requires a unique internal name. We use names
205: such as "msul1" for the first library server. <i>Restriction: One word,
206: no hyphens, underscores, or special characters.</i>
207: </dd>
208: <dt>Host administrator email</dt>
209: <dd>The amount of email sent to this address is relatively minimal. Messages
210: are sent every time the system starts up, or if the system is in
211: serious trouble. On a laptop, make this <tt>root@localhost</tt>.
212: </dd>
213: </dl>
214:
215: <h3>Configuring LON-CAPA</h3>
216: <p>
217: To configure and install LON-CAPA, execute the following commands:
218: </p>
219: <pre>
220: cd /root/loncapa-N.N (N.N should correspond to a version number like '1.3')
221: ./UPDATE
222: </pre>
223: <p>
224: You will need to enter the LON-CAPA configuration information you determined
225: in the previous section.
226: </p>
227:
228: <h2>Creating a Domain Coordinator</h2>
229: <p>
230: You will need at least one user at your site who has the role of
231: 'domain coordinator'. This user creates accounts for other users and
232: grants them additional privileges. The make_domain_coordinator.pl script
233: invoked below requires that you enter the users password. The password will
234: show in plaintext as you type it. Feel free to use the "passwd username"
235: command to change it later. Replace USERNAME and DOMAIN with an
236: appropriate user name and your domain.
237: </p>
238: <pre>
239: cd /root/loncapa-N.N/loncom/build
240: perl make_domain_coordinator.pl USERNAME DOMAIN
241: (WILL PROMPT FOR PASSWORD HERE)
242: mkdir ~USERNAME/public_html
243: chown USERNAME:www ~USERNAME/public_html
244: chmod 0775 ~USERNAME/public_html
245: chmod a+x ~USERNAME
246: </pre>
247:
248: <h2>Start/Restart Services</h2>
249: <p>
250: The LON-CAPA network services take a moment to start. Most misconfigurations
251: will be appearant at this step.
252: </p>
253: <pre>
254: /etc/init.d/loncontrol start
255: /etc/init.d/httpd start
256: </pre>
257: <p>
258: If you receive warnings when starting the httpd about missing perl modules,
259: please make sure you followed the instructions in
260: <b>Installing LON-CAPA Dependencies</b>. If you still have errors, please
261: contact the LON-CAPA development team.
262: </p>
263: <h2>Log in to your LON-CAPA Machine</h2>
264: <p>
265: Point a web browser at your new machine and log in as the domain
266: coordinator. Congratulations!
267: </p>
268:
269: <h2>If things aren't working right</h2>
270: <p>
271: If you've followed the steps above and the server doesn't start or you think
272: there's something wrong, please get in touch with the LON-CAPA developers.
273: If there were errors in installation of the dependency RPMs or during the
274: automatic setup, please send us as much information as possible.
275: If some part of this document is unclear please let us know.
276: </p>
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